Tooth-brush.



L. LANGH.

TOOTH BRUSH.

APPLICATION FILED APR.1, 1910v 969,639. Patented Sept. 6, 1910.

cm, WASHINGTON, n. C.

THE man'ms PETERS LEOPOLD LANGH, OF VIENNA, AUSTRIA-HUNGARY.

TOOTH-BRUSH.

Specification of Letters Patent.

Patented Sept. 6, 1910.

Application filed April 1, 1910. Serial No. 552,776.

To all whom it may concern:

Be it known that I, LEOPOLD LANGH, a subject of the Emperor of Austria-Hungary, residing at No. 12 Wollzeile, Vienna, I, Austria-Hungary, have invented new and useful Improvements in ToothBrushes, of which the following is a specification.

The present invention relates to a rotary tooth-brush driven by a flexible shaft and consists in connecting the tubular casing, containing the flexible shaft, to the handle of the tooth-brush by means of two springplates of which one is in engagement by means of a stud with a guide slotway, whereby it is movable longitudinally.

The invention. is illustrated on the accompanying drawing, in which:

Figure 1, is an elevation, and Fig. 2, a view of a detail, drawn to a somewhat larger scale.

A suitably disposed mechanism, fo r example clock-work, not shown on the d wing, is arranged in the usual manner in' the cylindrical casing 1, which serves the toothbrush as a handle, and drives a spindl situated coaxiallywith the cylinder 1, wh'ch spindle serves through the agency of a fl 1- ble shaft 3, to set an interchangeable othbrush head 4, in rapid rotation. The exible shaft occupies as usual a tubular casliig 5.

The capability of deviation of the tubular casing 5 is provided by forming the legs of the forked connection thereof w' the casing 1, by two spring-plates 11 and 12, the latter of which is, according to the illustration movably and slidably connected by means of a stud 13 in a slotway 14, formed in a lug on the casing, so that the spring leg 12 is capable of limited displacement in the longitudinal direction whereby it is adapted to conform to the deformation caused by bending of the other leg 11.

With the rotary tooth-brush illustrated the user can reach even teeth difiicult of access and clean them in an eflicient manner.

I claim.

1. In a rotary tooth-brush, a brush head, a flexible shaft for driving said head, a tubular casing surrounding said shaft, a casing inclosing mechanism for driving said shaft, a bifurcated spring connection between said tubular casing and said inclosing casing and means for permitting limited longitudinal movement of one member of said bifurcated spring connection.

2. In a rotary tooth brush, a brush head, a flexible shaft for driving said head, a tubular casing surrounding said shaft, a motor for driving said shaft, a casing for said motor having a lug, a bifurcated spring connection between said tubular casing and said motor casing, one leg of which stops short of the motor casing, and a stud on said leg in engagement with a slotway formed in said lug on said casing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LEOPOLD LANGH.

Witnesses:

FREDERICK AOHENBACH, AUGUST FUGGER. 

